feat: initial fx_renderer implementation

2 files changed, 89 insertions, 0 deletions

diff --git a/include/render/fx_renderer/fx_renderer.h b/include/render/fx_renderer/fx_renderer.h
new file mode 100644
index 0000000..085cd1c
--- /dev/null
+++ b/include/render/fx_renderer/fx_renderer.h
@@ -0,0 +1,80 @@
+#ifndef _FX_OPENGL_H
+#define _FX_OPENGL_H
+
+#include <GLES2/gl2.h>
+#include <GLES2/gl2ext.h>
+#include <stdbool.h>
+#include <wlr/render/egl.h>
+#include <wlr/render/wlr_texture.h>
+#include <wlr/util/addon.h>
+#include <wlr/util/box.h>
+
+enum fx_tex_shader_source {
+	SHADER_SOURCE_TEXTURE_RGBA = 1,
+	SHADER_SOURCE_TEXTURE_RGBX = 2,
+	SHADER_SOURCE_TEXTURE_EXTERNAL = 3,
+};
+
+struct quad_shader {
+	GLuint program;
+	GLint proj;
+	GLint color;
+	GLint pos_attrib;
+};
+
+struct tex_shader {
+	GLuint program;
+	GLint proj;
+	GLint tex;
+	GLint alpha;
+	GLint pos_attrib;
+	GLint tex_attrib;
+	GLint size;
+	GLint position;
+	GLint radius;
+};
+
+struct fx_renderer {
+	float projection[9];
+
+	struct wlr_addon addon;
+
+	struct {
+		bool OES_egl_image_external;
+	} exts;
+
+	struct {
+		PFNGLEGLIMAGETARGETTEXTURE2DOESPROC glEGLImageTargetTexture2DOES;
+	} procs;
+
+	struct {
+		struct quad_shader quad;
+		struct tex_shader tex_rgba;
+		struct tex_shader tex_rgbx;
+		struct tex_shader tex_ext;
+	} shaders;
+};
+
+void fx_renderer_init_addon(struct wlr_egl *egl, struct wlr_addon_set *addons,
+		const void * owner);
+
+struct fx_renderer *fx_renderer_addon_find(struct wlr_addon_set *addons,
+		const void * owner);
+
+struct fx_renderer *fx_renderer_create(struct wlr_egl *egl);
+
+void fx_renderer_fini(struct fx_renderer *renderer);
+
+void fx_renderer_begin(struct fx_renderer *renderer, int width, int height);
+
+void fx_renderer_clear(const float color[static 4]);
+
+void fx_renderer_scissor(struct wlr_box *box);
+
+bool fx_render_subtexture_with_matrix(struct fx_renderer *renderer, struct wlr_texture *wlr_texture,
+		const struct wlr_fbox *src_box, const struct wlr_box *dst_box, const float matrix[static 9]);
+
+void fx_render_rect(struct fx_renderer *renderer, const struct wlr_box *box,
+		const float color[static 4], const float projection[static 9]);
+
+#endif
diff --git a/include/render/fx_renderer/matrix.h b/include/render/fx_renderer/matrix.h
new file mode 100644
index 0000000..6931e8d
--- /dev/null
+++ b/include/render/fx_renderer/matrix.h
@@ -0,0 +1,9 @@
+#ifndef _MATRIX_H
+#define _MATRIX_H
+
+#include <wlr/types/wlr_output.h>
+
+void matrix_projection(float mat[static 9], int width, int height,
+		enum wl_output_transform transform);
+
+#endif